Operating systems

Comment Script is a script that allows comments to
be left on any existing PHP or HTML page. By
default, the script shows name, e-mail, homepage,
title, and comment fields, though any can be
disabled. The "comment" field is mandatory and
must be filled out before the form can be
submitted. In order to prevent the script from
being abused by automatic spam bots, you can
enable the CAPTCHA feature. The script then asks
your visitors to enter a text they see in the
image below the comment form into an input box. It
also features an admin area where comments can be
edited and deleted and the front-end language set.

Commentari is a Disqus like commenting written in Java/Spring. It uses JavaScript/Ajax to fetch, add, and page through comments. Progressive enhancement is used. The demo interface uses Zurb Foundation, and adapts to tablets, mobile devices, etc. using HTML media calls. Comments are stored in a disk backed treap store, a fast binary tree.

OmniComment is a small script to that enables a Webmaster to add comments to any page. The idea is to include a call to the script in the appropriate page, using an SSI statement. The script will write out the appropriate HTML containing a link to the comments already posted for this page and a form to post new comments. In principle this is similar to Gentle Comment, except it's more lightweight: it uses a flat directory and normal files to store the comment (as opposed to a MySQL database), so it is not appropriate if your Web site receives thousand of comments a minute. Another difference is that all configuration happens in a text file, and there is no Web interface to perform administration. OmniComment generates an ATOM feed that follows publication of comments anywhere in the site.